265814015989 has 2 divisors, whose sum is σ = 265814015990. Its totient is φ = 265814015988.

The previous prime is 265814015963. The next prime is 265814016031. The reversal of 265814015989 is 989510418562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183822275025 + 81991740964 = 428745^2 + 286342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265814015989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265814015939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132907007994 + 132907007995.

It is an arithmetic number, because the mean of its divisors is an integer number (132907007995).

Almost surely, 2^265814015989 is an apocalyptic number.

It is an amenable number.

265814015989 is a deficient number, since it is larger than the sum of its proper divisors (1).

265814015989 is an equidigital number, since it uses as much as digits as its factorization.

265814015989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6220800, while the sum is 58.

The spelling of 265814015989 in words is "two hundred sixty-five billion, eight hundred fourteen million, fifteen thousand, nine hundred eighty-nine".